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The vulnerability of the onRegister() function in the Fastify framework, a Node.js software platform, allows attackers to compromise the confidentiality and integrity of the protected information.
🗓️ 21 Apr 2026 00:00:00Reported by FSTEC of Russia — Information Security Threat DatabaseType 
bdu_fstec🔗 bdu.fstec.ru👁 1 Views
| Reporter | Title | Published | Views | Family All 15 |
|---|---|---|---|---|
 | CVE-2026-33807 | 15 Apr 202609:52 | – | attackerkb |
 | CVE-2026-33807 | 15 Apr 202601:50 | – | circl |
 | @fastify/express 安全漏洞 | 15 Apr 202600:00 | – | cnnvd |
 | CVE-2026-33807 | 15 Apr 202609:52 | – | cve |
 | CVE-2026-33807 @fastify/express vulnerable to middleware path doubling causing authentication bypass in child plugin scopes | 15 Apr 202609:52 | – | cvelist |
 | EUVD-2026-22880 | 16 Apr 202601:03 | – | euvd |
 | @fastify/express's middleware path doubling causes authentication bypass in child plugin scopes | 16 Apr 202601:03 | – | github |
 | CVE-2026-33807 | 15 Apr 202610:16 | – | nvd |
 | GHSA-HRWM-HGMJ-7P9C @fastify/express's middleware path doubling causes authentication bypass in child plugin scopes | 16 Apr 202601:03 | – | osv |
 | PT-2026-33034 | 15 Apr 202600:00 | – | ptsecurity |
10
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21 Apr 2026 00:00Current
5.8Medium risk
Vulners AI Score5.8
CVSS 39.1
CVSS 29.4
EPSS0.0043